I don't buy this, honestly. It has the same energy as the people who briefly tried to spin the narrative that Tom Cruise had deleted scenes from the movie until Michael Waldron himself shot down those rumors by saying he never shot anything for the movie at all. People are so desperate to create this narrative that the movie was completely different and the reshoots removed so many actors and there's some #RaimiCut out there with all this special appearances just waiting to be released.
This plot point is very specific and if it was true, I believe it would've been mentioned by those leaks from last year that turned out to be mostly correct. The whole Magneto in DSITMOM thing started earlier this year alongside rumors about Deadpool and Iron Man being in the movie, so it was all probably a part of the same bullshit scoop that was never true. Saying it got cut it's the easiest way to save face instead of admitting you were wrong.